Snorkel



FIG. 1 is a right side perspective view of a snorkel design;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a top perspective view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a left side elevational view thereof. 

The ornamental design for a snorkel, as shown and described. 